I was wondering if someone could educate me a little bit on adding a adjustable proportioning valve to a standard dual circuit tandem piston master cylinder.
I have had a wilwood adjustable proportioning valve on my race car for many years and have noticed that when i adjust the bias more to the rear, the brake pedal engagement gets lower to the floor. I was recently told that this was not supposed to happen, but I dont see how. If the valve is restricting flow to my rear brakes, unless it has some sort of expansion chamber, its going to increase pressure ahead of the proportioning valve which will cause the piston in the MC that feeds the rear brakes to resist moving. This will in turn cause the front brakes to come on sooner (since it no longer has to move 2 pistons) thus creating "high pedal feel".
Is this understanding correct?
I have had a wilwood adjustable proportioning valve on my race car for many years and have noticed that when i adjust the bias more to the rear, the brake pedal engagement gets lower to the floor. I was recently told that this was not supposed to happen, but I dont see how. If the valve is restricting flow to my rear brakes, unless it has some sort of expansion chamber, its going to increase pressure ahead of the proportioning valve which will cause the piston in the MC that feeds the rear brakes to resist moving. This will in turn cause the front brakes to come on sooner (since it no longer has to move 2 pistons) thus creating "high pedal feel".
Is this understanding correct?